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United States Patent | 5,088,241 |
Lubbering ,   et al. | February 18, 1992 |
A polishing device has a working area into which cold gas is fed continuously in order to cool the partial work-piece surfaces where work is to be performed to a temperature at which no changes occur to the work-piece surface except for polishing.
Inventors: | Lubbering; Johannes (Herzebrock, DE); Ihme; Peter (Dusseldorf, DE); Busse; Jurgen (Monchen-Gladbach, DE); Schmitz; Erwin (Tonisvorst, DE); Volker; Wolfgang (Tonisvorst, DE) |
Assignee: | MG (DE) |
Appl. No.: | 603914 |
Filed: | October 25, 1990 |
Apr 01, 1989[DE] | 3910581 | |
Apr 01, 1989[DE] | 3910582 | |
Apr 19, 1989[DE] | 3910590 |
Current U.S. Class: | 451/449; 451/53 |
Intern'l Class: | B24B 055/02 |
Field of Search: | 51/356,266,322,170 T |
2198282 | Apr., 1940 | Hall | 51/266. |
3874124 | Apr., 1975 | Morgan et al. | 51/322. |
3990124 | Nov., 1976 | MacKay et al. | 51/378. |
Foreign Patent Documents | |||
51-3492 | Feb., 1976 | JP. | |
1546589 | May., 1979 | GB. | |
1546590 | May., 1979 | GB. |